<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
        body {
            background: url('https://cdn.pixabay.com/photo/2018/08/14/13/23/ocean-3605547_1280.jpg') no-repeat;
            background-size: 100% 130%;
        }

        #login_box {
            width: 20%;
            height: 400px;
            background-color: #00000060;
            margin: auto;
            margin-top: 10%;
            text-align: center;
            border-radius: 10px;
            padding: 50px 50px;
        }

        h2 {
            color: #ffffff90;
            margin-top: 5%;
        }

        input-box {
            margin-top: 5%;
        }

        span {
            color: #fff;
        }

        input {
            border: 0;
            width: 60%;
            font-size: 15px;
            color: #fff;
            background: transparent;
            border-bottom: 2px solid #fff;
            padding: 5px 10px;
            outline: none;
            margin-top: 10px;
        }

        .button {
            margin-top: 50px;
            width: 60%;
            height: 40px;
            border-radius: 10px;
            border: 0;
            color: #fff;
            text-align: center;
            line-height: 30px;
            font-size: 15px;
            background-image: linear-gradient(to right, #30cfd0, #330867);
        }

        #sign_up {
            margin-top: 45%;
            margin-left: 60%;
        }

        a {
            color: #b94648;
        }
    </style>
</head>
<body>
    <form id="login_box"  method="post">
        <h2>教室更改</h2>
        <div class="input_box">
            <input type="text" name="id" th:value="${course}" readonly>
        </div>
        <div class="input_box">
            <input type="text" name="userPassword" placeholder="请输入课程名称">
        </div>
        <div class="input_box">
            <input type="text" name="userID" placeholder="请输入课程时间">
        </div>
        <div class="input_box">
            <input type="password" name="userPassword" placeholder="请输入课程教室">
        </div>
        <div class="input_box">
            <input type="text" name="userID" placeholder="请输入课程容量">
        </div>
    </form>
</body>
</html>